Ahjdlikevirus
| Ahjdlikevirus | |
|---|---|
| Virus classification | |
| Group: | Group I (dsDNA) |
| Order: | Caudovirales[1] |
| Family: | Podoviridae |
| Subfamily: | Picovirinae |
| Genus: | Ahjdlikevirus |
| Type species | |
| Staphylococcus phage 44AHJD | |
| Species | |
| |
Ahjdlikevirus (synonym AHJD-like viruses) is a genus of viruses in the order Caudovirales, in the family Podoviridae, in the subfamily Picovirinae. Gram positive bacteria serve as natural hosts, with transmission achieved through passive diffusion. There are currently only two species in this genus, including the type species Staphylococcus phage 44AHJD.[2][1][3]
Structure
Ahjdlikeviruses are nonenveloped, with a head and tail. The head has icosahedral symmetry (T=4) approximately 54 nm in diameter. The tail is non-contractile and has a collar with twelve appendages. The diameter is around 55 nm, with a length of 27 nm. Genomes are linear, around 20kb in length.[2]
| Genus | Structure | Symmetry | Capsid | Genomic Arrangement | Genomic Segmentation |
|---|---|---|---|---|---|
| Ahjdlikevirus | Head-Tail | T=4 | Non-Enveloped | Linear | Monopartite |
Genome
Both viruses' genomes have been fully sequenced and are available on NCBI's website. They range between 16k and 17k nucleotides, with 20 to 21 proteins. Both complete genomes, as well as four additional "unclassified" virus genomes, are available here[3]
Life cycle
The virus attaches to the host cell adhesion receptors using its tail fibers, and ejects the viral DNA into the host periplasm. Viral replication is cytoplasmic. DNA-templated transcription is the method of transcription. Once the viral DNA has been replicated, the procapsid is assembled and packed, and the tail is assembled. Finally, the mature virions are released via lysis.[2]
| Genus | Host Details | Tissue Tropism | Entry Details | Release Details | Replication Site | Assembly Site | Transmission |
|---|---|---|---|---|---|---|---|
| Ahjdlikevirus | Bacteria: gram positive | None | Injection | Lysis | Cytoplasm | Cytoplasm | Passive diffusion |
History
According to ICTV's ninth report in 2009, the genus Ahjdlikevirus was first accepted under the name AHJD-like viruses. In 2012, the genus was renamed to Ahjdlikevirus.[4]
References
- 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 1 July 2015.
- 1 2 3 "Viral Zone". ExPASy. Retrieved 1 July 2015.
- 1 2 NCBI. "Ahjdlinkevirus Complete Genomes". Retrieved 17 February 2015.
- ↑ ICTV. "Virus Taxonomy: 2013 Release". Retrieved 17 February 2015.